Abun da ke ciki definition da kuma masana'antu tsari na carbon karfe bututu

Carbon Karfe bututu ne da aka yi da carbon karfe a matsayin babban abu. Abubuwan da ke cikin carbon ɗinsa yawanci yana tsakanin 0.06% zuwa 1.5%, kuma yana ɗauke da ƙaramin adadin manganese, silicon, sulfur, phosphorus da sauran abubuwa. Dangane da ka'idojin kasa da kasa (kamar ASTM, GB), ana iya raba bututun ƙarfe na carbon zuwa sassa uku: ƙananan ƙarfe na carbon (C≤0.25%), matsakaicin carbon karfe (C=0.25% ~ 0.60%) da babban carbon karfe (C≥0.60%). Daga cikin su, low carbon karfe bututu ne mafi yadu amfani saboda su mai kyau processability da weldability.